Madhyamik Examination (WBBSE) - 2017 Physical Science (Eng ver)
1.1 Which of the following is not a greenhouse gas ? (a) methane (b) water vapour (c) carbon dioxide (d) oxygen
1 2 Which of the following is the SI unit of pressure ? (a) Nm2 (b) Nm-2 (c) Nm (d) N
1.3 Vapour density of a gas is 32. Which of the following is its molecular weight ? (a) 8 (b) 16 (c) 32 (d) 64
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